Duck Duck Go in Firefox?
If you haven't tried Duck Duck Go, give it a try at duckduckgo.com
Learn more about how it protects your privacy and doesn't track you.. donttrack.us
If you like the above, support it being added to Firefox's search box! http://getsatisfaction.com/mozilla/topics/include_duck_duck_go_as_option_by_default_in_search_box